waite



Patented June 24, 1919.

2 SHEETS-SHEET I.

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H. F. WAITE.

FILM HOLDER FOR X-RAY APPARATUS.

APPLICATION FILED NOV. 1. 1911.

H. F. WAITE.

FILM HOLDER FOR X-RAY APPARATUS. APPLICATION FILED NOV. I. IQII.

1,307,386. 7 lzltvntml June 24, 1919.

2 SHEETS-SHEE1'Z.

with

HARRY F. WAITE, OF WHITESTONE LANDING, NEW YORK.

FILM-HOLDER FOR X-RAY APPARATUS.

Application filed November 1, 1917.

To all wkom it may concern: Y

Be it known that I, HARRY F. VVAITE, a citizen of the United States, anda resident "of VVhitestone Landing, county of Queens,

and State of New York, have invented a new and useful Improvement. inFilm-Holders for X-Ray Apparatus, of which the following is aspecification.

The object of my invention is to provide a device of this character inwhich a film may be placed and a radiograph made either with or withoutan intensifying screen. This and other objects are accomplished by myinvention, one embodiment of which is hereinaftervmore particularly setforth.

For a moreparticular description of my invention reference is to be hadto the accompanying drawings, forming a part hereof, in which;

Figure 1 is a plan view of my film holder.

Fig. 2 is a plan view of the same with the cover removed.

Fig. 3 is a longitudinal section of this.

device, the bottom and cover being separated.

Throughout the "arious views of the drawings, similar referencecharacters designate similar parts. 7

My film holder 1 consists of a bottom 2 and a top 32. This bottom ispreferably in the form of a shallow box or tray with cross partitions 3and at that divide it into chambers 5, 6 and 7. These partitions 3 and 4are preferably made of lead and so are the inner walls of the chambers 5and 7 which have lead sheeting 8 to prevent X- rays from intruding whenthe device is in use so that the film rolls will never be ruined orinjured by improper ex osure while in the apparatus. These cham ers 5and 7 are also made light proof so as to prevent injury to the filmrolls from light.

The chamber 5 has spindles 9 which are adapted to receive a spool of afilm and these spindles may be provided with handles 10 and are pressedby leaf springs 11 which are secured to the box 2 in any suitablemanner.

These springs press against light excluding.

packing 12 as shown in Fig. 2.

The chambers 5and 7 are each provided with a retarding spring 13 mountedon a base 14. which is secured to the lining 8 in any suitable mannerand this spring 13 has its upwardly splayed ends bearing against thefilm carrying spool which is in the same chamber.

Specification of Letters Patent.

Serial No. 199,723.

The chamber 7 has two spindles, one 9 with attendant parts 10, 11 and 12as above Patented-June 24, 1919.

described and another 15 which has a driving disk 16 with a knurled edgeso that itmay be turned rapidly. The inner end of this spindle has outspreading wings 17 adapted to takein a corresponding recess in the endof a spool and drive the same when the disk 16 is turned. A suitableratchet mechanism 18 prevents the spindle 15 from corresponding recessin the top edges of the box 2 so that the film will never get in C011".

tact with the lead partitions 3 and 4. This is important because .theapparatus is preferably used with the emulsion side down and agai'nstthefelt 20.

The center chamber 6 is provided with a laterally extending spindle 22which is mounted in suitable bearings and is provided at its outer endwith a disk 23 by which it may be turned and a mark 24 by which theexact position of a cam 25 at the other end of this spindle 22 may bedetermined. This-cam 25 is at the bottom of a casting or socket 26 whichguides a spindle 27, at the top of which is a bracket 28, and on this isa fluorescent screen 29 which may be raised or lowered by turning thecam 25. A set screw 30 with its end in a straight groove 31 in thespindle 27 prevents the screen 29 from turning and allows only a.vertical movement when the cam 25 is turned. This mechanism permits thescreen 29 to be raised or lowered so that it may be adjusted against theemulsion surface, of a film when the film is ready for a radiograph tobe taken thereon and away from this film when it is shifted or thisscreen may be altogether removed from the apparatus, if desired.

The cover 32 is made to fit the box 2 as shown, with light tight jointand is secured at each end by suitable fasteners 33. Packing 34 isagainst the upper edge of the box 2 and lead sheets 8 line the ends ofthe cover 32 over the chambers 5 and 7 and prevent all X-rays fromentering therein. This top 32 has a boundary line 35 for defining on theoutside where a radiograph' may be taken,

and where the chamber 6 is which is not protected by lead shields 8 andwhere the screen 29 may be found. A hole 36 covered with red,translucent material is placed at any convenient location to show thenumeral 37 which must be exposed before a film 38 is in a position for aradiograph. This film 38 is provided with the conventional signs as ahand and then the numeral.

In view of-the foregoing the use of my improved device will be readilyunderstood.

Assumingthe parts to be as indicated in Fig. 1, ob ect to beradiographed is placed within the boundary indicated by the line 35 andthe X-rays applied in the conventional manner. Then .after the screen 29is removed from the film 38, this film is shifted by turning the disk 16and a new part brought into the proper position as indicated by thenumeral 37, the screen 29 is then placed against the film 38 and a newradiograph is taken and this series of operations is repeated until thefilm is exhausted. Then the cover32 is removed, the used film taken out,a new film inserted in the same manner as in film cameras, the cover 32is restored and secured and additlonal radiographs may be taken asbefore care always being had to have the film properly placed.

lVhile I have shown one embodiment of my invention it is obvious that itis not restricted thereto but that it is broad enough to cover allstructures that come within the scope of the annexed claim.

What I claim is In a device of the class described, a box of opaquematerial with centers at each end adapted to receive the spools of thefilm, lead linings surrounding the spaces occupied by said spools, anopaque cover adapted to fit said box which cover is provided with leadfor said chambers, a fluorescent screen between said chambers and asocket, stem and cam for raising and lowering the screen.

Signed in the city, county and State of a.

New York, this 29th day of flctober, 1917.

HARRY RVAITE.

